(Topic ID: 234669)

Wrong motor/cam for AFM 3 Bank Target?

By jbovenzi

4 months ago

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  • 8 posts
  • 4 Pinsiders participating
  • Latest reply 3 months ago by jbovenzi
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#1 4 months ago

I tried this on the AFM thread, but got no takers. Here's hoping that the larger group can help me please:

I have some issues with my 3 Bank Target motor, so I ordered one from Marco. The old motor is leaking oil, so I thought that it was time to replace it. https://www.marcospecialties.com/pinball-parts/14-8023 Marco claims that this fits AFM and Jackbot.

Installing the new motor was easy as it fits perfectly in the target motor bracket. But as I took the motor out of my AFM, I found that the Shaft on the new motor was larger than the original (I think) motor that I had in my machine. The new motor will not fit the existing cam for the assembly. So, to sum it up, the original motor has a smaller shaft than the newer motor.

Has anyone run into this before? Or did Marco get the wrong motor for AFM? Maybe my cam fits the older motor and is not a standard AFM cam?

I just talked to Marco and they have sold 11 of these motors over the years, so they are not sure what is the issue.

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#2 3 months ago

Bump to see if anyone can help with information...

#3 3 months ago

Funny, I have my motor and targets pulled from my AFM right now to clean everything. I was looking it over and you could try and remove the 3 screws and swap the shafts. If its packed with oil then it may be a big mess though. I could be wrong.

It may be easier to return and buy from Planetary Pinball or another source until you get the right one. You could try shaving it down but that sounds like a PIA.

#4 3 months ago

That is the right motor part #.

Do you have calipers to check the hole of the cam and diameter of the shaft?
It probably wouldn’t take much to just drill the cam.

#5 3 months ago

Sorry, I don't.

#6 3 months ago

Take the old one apart..... If its easy enough swap the plate and the shaft. If not send it back.

#7 3 months ago

Thanks. i was away for work training, but I appreciate the comments.

i will look into taking the motor apart and see what gives. I wasn't thinking about drilling the cam due to "what if I have to replace it again, and the motor shaft is smaller on the new one?"

I'm going to take some measurements to see what the two shaft sizes are and post them here. Might as well be helpful to the team if someone else runs into this issue.

2 weeks later
#8 3 months ago

To the group,

I delayed this for awhile so that I could get to the bottom of the motor. jfesler was nice enough to let me ruin (jk) his AFM and check out his motor.

It turns out that he has the same motor with the smaller shaft as I do. The Marco replacement has the larger shaft and will not work with the original cam.

First one is the jfesler one, the second is mine and the third is the Marco. Measurement of the original shaft size is shown below.

I will contact Marco and see if they need to adjust their motor suppliers.

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